Add field for attachment_url preference to image settings page

Fixes #2344

Conflicts:

	core/app/views/spree/admin/image_settings/edit.html.erb
Remove commented out lines from payment factory
Bump ActiveMerchant dependency.

Fixes #2346
Depend on Ransack 0.7.2

This is due to ernie/ransack#176.
Use localized error message for email validator

Fixes #2364
Fixed issue with duplicate thumbnails on ProductController#show

Fixes #2361
Updated paperclip rake command with proper class info for spree.

Fixes #2369
Correct Taxon class reference in taxon.rake

Fixes #2370
Make admin/orders/shipments_spec.rb not dependent on a checkbox's id
Auto-orient uploaded images based on EXIF data

Fixes #2338
Remove auth-specific translations from core

These should live in the auth extensions
Use 1.8 hash syntax within API::V1::BaseController
fix #2347 fluid images for product

Fixes #2374
Bump to Rails 3.2.10
Fixing tiny typo

Fixed #2377
Version bump 1.2.3
Version bump 1.2.4.beta
Bump rspec-rails dependency to 2.12.0
Removes useless call to order#update!

The only reason I could see for those to be there is to make a test
pass. But the problem was on the test itself due to the way stubs work.
Also add some doc blocks to CreateAdjustment class.
Remove CSV references from core.rake

These tasks do not support CSV files